Method and means for treating wood poles



1,618,407 Feb- 22 1927' G. A. BUBAR METHOD AND MEANS FOR TREATING WOOD POLES Filed April 30, 1926 GEORGE A. BUBAR, OF MINNE IPANY, OF MINNEAPOLI g 1,618,407 PATENT oEFicE.

APOLIS, MINNESOTA ASSIGNOR TO BELL LUMBER COM- S, MINNESOTA, A CORPORATTON OF MINNESOTA. y

METHOD AND MEANS FOR TREATING WOOD POLES.

Application filed April 30, 1926. Serial No. 105,728.

This invention relates to an improved method and means for treating wooden poles and timbers preparatory to impregiiating them with a preserving terioration of the wood ticularly relates to such sists in hammering, prior substantially the entire face of that portion of fluid to prevent defibers; and more para method which coiito impregnation, circumferential surthe pole or timber to be impregnated, thereby disrupting or separating a preserving of the fibers t the wood fibers sufticientl to allow fiuid to penetrate tie surface ole, without cutting orsevering the liereof during the operation, a common practice with machines in general use; such machines usually being provided with means for piercing the surface of the pole,

and severing of the wood fibers with a resulting objectionable weakening of the pole. It is well. known that wooden telegraph or telephone poles, sunk or set into decay at the short time, the with a ksuitable preserving instance, as creosote. fluid can penetrate Before having a portion thereof the ground, deteriorate or ground line, in a comparatively unless such portion or area of pole has been impregnated or treated fluid such, for the preserving into the surface ofthe wood to a depth sufficient to prevent deterioration thereof, the surface is usually punctured to allow the preserving fluidto readily penetrate between the fibers.

An object of this invention is to provide an apparatus for thus treating and conditioning the surface of a pole or timber to receive a suitable fiuid preservative and comprising a fluid-operated hammering device adapted to engage the surface of the pole and to hammer and pound it in rapid succession, whereby the wood fibers will become disrupted or being severed separated sufficiently without to allow the preserving fluid to readily penetrate the surface of the pole.

A further object of the invention is to provide such an apparatus of comparatively vsmall size and light weight, comprising a supporting carrying rollers adapted carriage having to engage and roll anti-friction upon the surface of the pole or timber to carry the weight of the -carriageaiul associated parts, and to provide a guide therefor; the fluid-operated hammering or iiiaiiling device being mounted on the carriage and having a fiexible connection with a source of fiuid supply such,

for instance, as

vthe surface of a pole or timber prior to being impregnated .with a preserving fluid` whereby the fluid may penetrate into the wood sufficiently deep to render it substantialiywaterproof.

Other objects of the invention will appear from the following description, and the accompanying drawings and will be pointed out in the annexed claims.

In the drawings there has been disclosed a structure designed to carry out various objects of the invention, but it is to be understood that the Vinvention is not confined to the exact features shownas various changes may -be made within the scope of the claims which follow.

K In the accompanying drawings forming a part of this specification,

. Figure 1 is a vertical sectional vie-w .of the apparatus showing itl ositioned upon a portion of a pole or timber, and also showing the general constikuction thereof;

Figure 2 is a plan view of Figure 1;

Figure 3` is a cross-sectional view on the line 3-3 of Figure 1, showing the means Vprovided for controlling the operation of the finiti-operated hammering device;

, Figure 4 is a diagrammatic view illustrating the apparatus positioned upon the surface of a pole, the shaded portion indicating the area ofthe pole which has been subjected to the hammering or maiiling treatment.

The novel device featured in this invention preferably comprises a carriage 5 having carrying rollers 6 provided at each end thereof adapted to roll upon the surface of the pole or timber, as shown in Figures 1 and 4, to carry the Weight of thedevice. Suitable handles 7 and 8 are provided at each end of the base plate 5 whereby the device niay conveniently be manually operated back and forth upon the surface of the pole as show n in Figure 4.

The means provided for hammering,

mauling or pounding the surface of the pole p lll) i 28. The port the threaded end portion 11 of a connecting rod 12 having its other end secllred to a piston 13, reciprocally mounted in a bore 14 provided in ya. removable cylinder 15, as shown inA Figure 1. The lower portion of the cylinder 15 is mounted in a bore 16 provided in the raised portion 17 of the base plate 5. The enlarged threaded portion 18 of thev cylinder is secured to a. collar 19 lnounted upon the raised portion 17 of the carriage 5, and secured thereto by means of bolts or cap screws 21 as shown. Thus the cylinder will be securely held in the raised portion 17 of the plate 5. An enlarged bore or socket 22 is provided in the lower portion ofthe carriage to receive the hammer head 9, which also cooperates witll thc piston to provide a support therefor.

The device herein shown is of the fluid pressure operated type, and comprises a valve mechanism mounted at the upper end 'of the cylinder' within a housing 23, preferably secured to the enlarged portion 18 of the cylinder by suitable threads as shown. This valve mechanism is of ordinary wellkiiown construction such as is commonly employed in air hammers and similar devices, and therefore need not be described in detail. Briefly, it comprises a valve casing 24 having a valve 25 movably mounted therein to control the flow of fluid pressure from the intake port 26 to the bore 14 of the cylinder, by means of the ports 27 and nular space 29 around the valve casing 24 and with the exhaust port 31 as shown.

The intake port 26 leads from the upper portion of the housing 23 downwardly through the collar 19, raised portion 17 of the. carriage 5 and through the latter, as indcatcd by the dotted lines ill Figures 1 and Il, and terminates in a bore 32 provided in the handle 8 as shown in Figure 3. A small plunger 33 is reciprocally mounted in the bore l2 adapted to open aild close the intake port 2G to the bore 32 as shown. The bore 32 communicates with a flexible fluid supply pipe .'llthrough a coupling 35 connected with the handle 8, as shown particularly in Figures 1 and 2. A small throttle lever 36 is pivotally mounted in the handle 8 and has an extension 37 adapted to terminally engage the plunger 33 wliicll normally is held in closed position by means of a spring 38, mounted in a plug 39 as shown in Figure 3. Thus when the throttle lever 3G is depressed, the 'iluiiger will be longitudinally moved in tile bore 32 to uncover the intake port 26, thereby establishing communication between the intake port and the fluid supply pipe 34 with the resultant operation of the valve mechanism at the upper end of the cylinder and therefore the piston 13 within the bore 14.

In the operation of this novel device, the

' pole with the 28 communicates with the aiipole or timber is preferably mounted upon a suitable supporting means such as the roller block 41, shown ,in Figure 4, whereby the pole may be the eriphery thereof is being hammered 0r maulbd with this novel device. The device here shown is of the portable type, and its weight is such that it may be conveniently handled by an operator by simply gri ping the handles 7 and 8'and moving the evice, as a whole, back and forth upon the periphery of the pole while the hammer head is being actuated to forcibly engage the surface of the pole and hammer it by rapid successive blows, thereby mailling and pounding the surface thereof as indicated by the shaded portion sholvii in Figure 4. Such mailling and pounding of the periphery of the pole will soften the wood fibers and cause these to become disrupted or separated sufiiciently to allow a preserving fluid to readily penetrate into the surface of tance sufficient to trender the impregnated portion of the pole substantially moisture proof. By thus hammering the surface of the pole the wood fibers will not be cut or severed but will be softened and se arated sufficiently to allow the pole to absor a preserving fluid without weakening it, as frequently happens in devices which usually have means for piercing the surface of the resultant transverse cutting and severing of the wood fibers.

I claim as my invention:

1. A device of the class described comprising a carriage adapted to be moved back and forth over a circumferential surface of a pole, and means mounted in said carriage for mailling or pounding the surface of the pole to soften and separate the fibers thereof, and thereby adapt the surface of the pole to be thoroughly impregnated with a preserving fluid.

2. A device of the class` described comprisi g a carriage having lland-grips for convenience in moving it back and forth over the peripheral surface of a pole, and a hainnieriilg or mailling means mounted in said carriage and adapted to pound and disrupt the surface fibers of the wood.

fl. A device of the class described comprising a reciprocating mailling hammer havingr a blunt face 'for pounding and separating the surface fibers of a pole, and a suitable carriage wherein said mailling hamnlcr is mounted. A

Li- A dcl'ice of the class described coniprisilig a'carriage adapted to rest upon and be moved back and forth over the peripheral surface of a pole, and a fluid pressure actuated mailling hammer mounted in said carriage for pounding the surface of the pole and separating and softening the fibers thereof.

A device of the class described comconveniently rotated while the pole, a disl lil prising a maulin' hammer having a face to engage the sur ace of a pole and disrupt and separate the fibers thereof, and a support or carrier wherein said mauling hammer is mounted.

6. A device of the class described comprising a carriage adapted to be moved back and forth over the surface of a pole to be treated, a fluid pressure actuated mauling hammer mounted in said carriage and having a reciprocating movementfor pounding and softening the surface fibers of the pole, a cylinder whereto the fluid pressure is delivered, and a valve for regulating the llow of fluid pressure to said cylinder.

7. A device of the class described comprising-a suitable base having means for supporting it for movement back and forth over the surface of a pole, a reciprocating maulin r hammer mounted on said base and comprising a plunger having a flat faced maulmg head, a cylinder wherein said plunger is movable, and valve controlled means for delivering fluid pressure to said cylinder.

8. A device of the class described comprising a support for the end ofthe pole to be treated and whereon the pole is adapted to be rotated, a carriage movable back and forth over the surface of the pole, a fluid pressure actuated mauling hammer mounted in said carriage and having a face for pounding and softening the surface .of

`the `pole to receive a preserving fluid and manually controlled means for regulating the operation of said hammer. v

9. A device of the class described, comprising in combination, a supporting carriage adapted to bearl on the surface of a wooden pole or timber, a bore in said supporting carriage, a fluid-operated piston reciprocally mounted in said bore, means for controlling the operation of said piston, and a disc-like head connectedwith said piston and operable thereby to hammer the surface of said pole or timber, 'whereby the wood fibers thereof will-separate to allow a preserving'fluid to penetrate the surface of said pole or timber.

10. .A device of the class described, comprising in combination, a supporting member adapted to be moved over the surface of a log or ole, a'fcylinder mounted in said -member, a uid-operated piston reciprocally mounted in said cylinder, and a disc-like head connected with said piston and operable thereby to forcibly strike the surface of said log in rapid succession when said piston is operated, thereby separating or disrupting the wood fibers to allow a liquid preservative to penetrate the surface.

1l.. A device of the class described, coniprising a carriage having carrying rollers thereon adapted to engage the periphery of a wooden pole or timber whereby it may be moved over the surface thereof, a cylinder mounted in said carriage and having a connection with a source of fluid supply under pressure, a piston reciprocally mounted in said cylinder, a hammer head connected with said piston, and operable therewith, and a valve mechanism for controlling the operation of said piston whereby, when said carria-ge is moved over the surface of a pole, said hammer head may be operated to hammer the surface of said pole in rapid succession, thereby separating the fibers ofthe pole to allow a liquid preservative to penetrate the surface thereof.

12. A method of treating wooden poles and timbers, to adapt them for absorbing a preserving fluid .which consists in hammering or mauling a surface thereof to disrupt and soften the wood fibers.

13. A method of treating wooden poles to adapt themfor absorbing a preserving fluid which consists in mauling or hammering a peripheral circumferential surface thereof to soften or separate the wood fibers, during rotation of the pole.

In witness whereof, I have hereunto set my hand this 27th day of April, 1926.

GEORGE A. BUBAR. 

